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<br />30() , <br />...to) <br /> <br />3.6 Groundwater Suoolv <br /> <br />Groundwater is used as a supplemental source of water supply by individual shareholders under the <br />FI. Lyon Canal. Total monthly pumping under the FI. Lyon Canal within Reach 3 and Reach 4 has <br />been summarized and is included in Table A3.4 of Appendix 3. Ground water pumping presented <br />in Table 3.6 averaged 26,347 acre-feet annually and adds 12% to the total water supply of the system. <br /> <br />At the present time ground water pumping is extensively regulated by the State Engineer's Office. <br />Rules and regulations promulgated by the State Engineer's Office require full augmentation of all <br />wells installed subsequent to July 1, 1972. For wells installed prior to this date pumping is allowed <br />only three of every seven days provided other appropriators are not adversely affected. Temporary <br />substitute supply plans are utilized to allow the wells constructed prior to July 1, 1972 to pump on <br />additional days (Order of the State Engineer 1972). The Colorado Water Protective and <br />Development Association is the temporary plan for the reach of the Arkansas River from Pueblo <br />Reservoir to John Martin Reservoir. The Lower Arkansas Water Management Association is the <br />temporary plan for the reach of the river from John Martin Reservoir to the ColoradolKansas state <br />line (Witte 1993). <br /> <br />3-9 <br />